Primes p with p-2^e and p+2^e prime for some exponent e.
A071781
Primes p with p-2^e and p+2^e prime for some exponent e.
Terms
- a(0) =5a(1) =7a(2) =11a(3) =67a(4) =32771
External references
- oeis: A071781
A071781
Primes p with p-2^e and p+2^e prime for some exponent e.